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Methodology

How beMyCalc builds, tests, and documents all 123 calculators — formulas, data sources, and assumptions.

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Calculations run in your browser

When you move a slider or type an amount, the math runs locally in your browser. We do not send loan balances, salaries, or investment amounts to our servers. Share links encode your inputs in the URL so you can bookmark or send a scenario — treat shared URLs like any link that contains personal numbers.

Standard formulas

Most tools use widely published financial math: reducing-balance EMI amortization, compound interest, SIP future value, CAGR, present/future value, and similar textbook formulas. Below you'll find every calculator with its formula and a link to the live tool. Each calculator page also has a "How we calculate" panel with the same equation.

India tax & government schemes

India income tax, HRA, and regime-compare tools use slab rates and deductions documented for FY 2024-25 (AY 2025-26). PPF, NPS, SSY, NSC, and similar scheme calculators let you enter the notified interest rate — we do not hard-code a single live government rate unless the tool explicitly states one as a default example.

Scheme limits (80C cap, PPF yearly maximum, etc.) follow commonly cited rules at the time of the last review. Indian rules change in Union Budgets and notifications — always confirm with the Income Tax portal, EPFO, or your chartered accountant before filing or investing.

Currency exchange rates

The currency converter fetches indicative mid-market rates from the Frankfurter API (European Central Bank reference data), cached for about an hour. Banks and card networks apply their own spreads and fees — use the exchange calculator to model fees separately.

Worked examples & guides

Calculator pages show sample scenarios (e.g. ₹10L loan at 8.5% for 20 years). These are illustrations to explain the tool, not recommendations. Guides on /guides link to calculators so you can replace example numbers with your own.

How we update tools

  • India tax slabs and standard deductions when a new financial year is notified.
  • Default example rates when major scheme notifications change.
  • Formula bugs reported via contact or on-page "Report an issue" links.
  • New calculators when user demand and formula clarity justify a dedicated tool.

Report an error

Found a wrong formula, outdated slab, or broken share link? Use our contact form with the calculator URL and your expected result.

See also: About beMyCalc · Disclaimer

All calculator formulas

123 tools — showing 101–120

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All calculators (123)India tax & schemes (18)Investment (13)Loans (14)Interest (2)Deposits (8)Retirement (7)Returns (4)Salary & Payroll (9)Tax (8)Property & Real Estate (5)Trading & Investing (11)Business (4)Currency (2)Budgeting & Planning (3)Health & Wellness (5)Converters (13)Everyday Tools (15)
Savings CalculatorInvestment

Balance = initial savings compounded monthly + monthly deposits compounded at the savings rate

Enter starting balance, monthly savings, interest rate, and duration to see total savings growth.

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Savings Goal CalculatorInvestment

Required monthly savings = (Goal − FV of current savings) / [((1 + r)^n − 1) / r]

Enter goal amount, current savings, expected return, and timeline to find required monthly contribution.

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SCSS CalculatorDepositsIndia

Maturity = P × (1 + r/4)^(4×t) with quarterly compounding over the SCSS tenure

Enter SCSS deposit and interest rate. Interest compounds quarterly over the 5-year tenure (extendable once by 3 years in real accounts).

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Simple Interest CalculatorInterest

Interest = P × r × t; Amount = P + Interest, where P = principal, r = annual rate, t = time in years

Simple Interest = Principal × Rate × Time / 100. Enter these values to get interest amount and total sum.

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SIP CalculatorInvestment

FV = P × [((1 + r)^n − 1) / r] × (1 + r), where P = monthly SIP, r = monthly rate, n = months

Enter your monthly SIP amount, expected annual return rate, and investment duration. The calculator uses compound interest on monthly contributions to project your total investment, returns, and maturity value.

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SIP vs FD vs PPF CalculatorInvestmentIndia

SIP FV uses compound growth on monthly deposits; FD/PPF use their respective compounding rules side by side

Enter monthly investment amount, expected SIP return, FD rate, PPF yearly deposit and rate. We project maturity values and highlight the best option.

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SIP vs Lumpsum CalculatorInvestment

Lumpsum FV = P × (1 + r)^n; SIP splits the same total P into equal monthly installments with the standard SIP formula

Enter total amount, expected return, and years. Lumpsum invests all on day 1; SIP splits the same total into equal monthly installments.

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Speed ConverterConverters

result = input × (factor_from ÷ factor_to) relative to the SI base unit for this type

Speed converts through metres per second. 1 km/h = 0.277778 m/s, 1 mph = 0.44704 m/s, 1 knot = 0.514444 m/s.

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SSY CalculatorDepositsIndia

Yearly SSY deposits compound at the notified rate; maturity when the account completes its 21-year tenure

Enter yearly deposit (up to ₹1.5 lakh), current SSY interest rate, and tenure (15–21 years). Returns compound annually like PPF until maturity when the girl child turns 21.

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Staking Rewards CalculatorTrading & Investing

Rewards = Amount × (1 + APY/365)^days − Amount (daily compounding)

Rewards compound daily: Total = Amount × (1 + APY/365)^days − Amount.

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Step Up SIP CalculatorInvestment

Monthly SIP increases by step-up % each year; each installment compounds monthly at the expected return

Enter starting monthly SIP, annual step-up %, expected return, and investment period. Each year your SIP increases before monthly compounding is applied.

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Stock Average CalculatorTrading & Investing

Average price = Σ(quantity × price) / Σ quantity across all purchase lots

Enter quantity and buy price for up to three purchase lots. Average price = total cost / total quantity across all lots.

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Stock Profit CalculatorTrading & Investing

Profit = (Sell price − Buy price) × Shares; Return % = Profit / (Buy price × Shares) × 100

Profit = (Sell Price − Buy Price) × Shares. Return % = Profit / Cost × 100.

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SWP CalculatorInvestment

Balance each month = (Previous balance − withdrawal) × (1 + monthly return); runs until corpus depletes or tenure ends

Enter total corpus, monthly withdrawal amount, expected annual return, and see how long funds last or remaining balance.

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Take Home Salary CalculatorSalary & Payroll

Take-home = Gross salary − income tax − employee contributions (PF, insurance, etc.)

Enter gross monthly salary and all deduction percentages and fixed amounts. The calculator shows itemized deductions and your net take-home pay.

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TDS CalculatorTaxIndia

TDS = gross amount × TDS rate / 100; net amount = gross − TDS

Enter gross payment amount and TDS rate (%). TDS = gross × rate / 100; net amount = gross − TDS. Use the rate applicable to your payment section (194A, 194C, etc.).

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Temperature ConverterConverters

Convert via Kelvin: K = °C + 273.15; °F = (°C × 9/5) + 32; °R = K × 9/5

Temperature uses offset formulas (not simple ratios). We convert through Kelvin: °F = (°C × 9/5) + 32, K = °C + 273.15.

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Time CalculatorEveryday Tools

Result minutes = startHour×60 + startMin + addHours×60 + addMin; wrap modulo 24×60 with day offset

Set a start time (HH:MM) and enter hours and minutes to add or subtract. Results wrap past midnight and show any day offset.

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Tip CalculatorEveryday Tools

Tip = bill × tip% ÷ 100; Total = bill + tip; Per person = total ÷ number of people

Enter the bill amount, pick a tip percentage (or drag the slider), and choose how many people split. We add the tip and show total and per-person amounts.

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VAT CalculatorTax

VAT = Net price × VAT rate / 100; Gross price = Net + VAT

Enter the amount, VAT rate, and whether the price is VAT-exclusive or VAT-inclusive to calculate net price, VAT amount, and total.

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